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Auto Focus electronic magnifier set at 150mm focal length

NSZ405 stereo microscope equipped with 0.5x auxiliary lens (WD180mm)

■Autofocus Digital Loupe

Set optical zoom to “5.5”

・Set optical zoom to “14”

・Set Optical Zoom to “14” and Digital Zoom to “1.7”

 *Digital zoom level “1.7” is actual range

■Stereo zoom Microscope NSZ405 + 0.5x secondary lens

・The objective lens is set to “0.7”

・The objective lens is set to “1,5”

・The objective lens is set to “3,0”

If we talk about the total magnification indicated by a stereo microscope, it is a microscope that covers the area from 3.5x to 15x.

4K digital loupe uses lens with aperture.
Therefore, the focal depth can be adjusted to some extent.

We tried stacking 9 10 yen coins.（The thickness of a 10 yen coin is 1.5 mm.）

＜When opening the lens aperture＞

＜Once you have narrowed the aperture of the lens＞

Furthermore

4K digital magnifier with digital zoom function.

If you zoom digitally, you can still increase magnification while maintaining depth of focus.

■Convenient in times like these

If tilted to the degree according to the figure below, the focus is appropriate

Therefore, it is very convenient to examine an object by tilting it in your hand.

	4K Digital Loupe 4K-50-10N
	TYPES OF RING LIGHTING 4K Digital Loupe 4K-50-10N

1.　Wide vision

（Basic vision）	（3x digital zoom）
２．Easy zooming at your fingertips
Zoom in with mouse operation
3．Adjust depth of field ・Maintains depth of field when zooming in
By narrowing the aperture, focusing can be achieved at height differences of about 10 mm.
■Adjust depth of field
■Zoom while maintaining depth of field
（Basic vision）	（3x digital zoom）

■Device configuration

4k Digital Loupe (Flaw Enhanced Observation Type) 4K-0207-120MM

Shodensha’s high-resolution camera has an external trigger head and is compatible with external triggers.

Shodensha’s high-resolution camera has an external trigger head and is compatible with external triggers.

（※Some items may not be supported)

Connect an extension cable instead of the standard release.

Shortening the white wire and the guard wire will activate save mode.

The red line is “unused”.

Wireless HDMI transceivers are being sold on the market at relatively low prices.

This time, after purchasing the above mentioned device, connect it to our HDMI camera to check its operation.
The transceiver is about the size of a cigarette box.

		Since the transmitter and receiver each require power, we don’t think there will be much change in terms of wire savings.
		Images can be displayed without lag or color loss.
		There were no problems with displaying categories and adjusting the camera.

Please note that this is an introduction only and does not guarantee the operation of all HDMI wireless transceivers.

Our high-resolution cameras’ AC adapter and HDMI cables come straight from the back of the camera.

When installing, you may want to shorten the space for this wiring section.
In that case, wiring space can be easily saved by using horizontal connectors.

Horizontal connector – for HDMI cable (left) – for AC adapter (right) You can ignore the gap on the back as shown in the photo below.

There are two main ways to record with a high-resolution camera without a storage function: the “PC method” and the “non-PC method”

For how to use a PC, please refer to the page below.

For the non-PC method, use an HDMI recorder.

We sell the following HDMI recorders.

HR-MINI HDMI recorder

As mentioned above, no PC is needed, all that is needed is to connect the monitor and camera using an HDMI cable.

You can save images and videos to a microSD card or a USB memory storage device connected to the main unit.

To install an external hard drive and record for a long time, please refer to the page below.

The XM200HD uses a dedicated remote control to save images.
If you just want to save images, you can control it from outside without using the remote control.

The terminal on the remote is a pre-made 3-pole 3.5mm stereo mini plug Right on the website that is easy to get.

No problem even if you disconnect the optional remote control and use it.

If you disconnect the remote control and use it, insert a resistor (30KΩ) between the white wire and yellow wire to short circuit and a static image will be saved. (Make sure the resistance is 30KΩ.)

XM200HD high performance high definition camera

Our high resolution cameras and PC monitor direct connection cameras have USB ports. Normally, USB memory will be inserted here.
The captured images will be saved to this USB memory.
To view saved images, it is necessary to remove the USB memory and connect it to the PC.

We’ll show you how to send captured images directly to your PC or tablet without having to move USB memory.

It’s called an SD card with built-in WiFi or a wireless SD card.

Connect this port to the camera’s USB port using a USB-SD adapter.

Installation methods vary slightly depending on the card manufacturer, but the two steps below are required.

1. Download the application from the manufacturer’s website
2. Connect the SD card to Wi-Fi and make the Wi-Fi compatible PC recognize the card

After the installation is complete, you can perform some operations as shown below.
The screen above is a live image connected directly to the camera.

The captured image will be saved on the screen below (Tablet).

After releasing the camera shutter, you need to update your PC or tablet, but if you press the “F5”- function key and reload, you can immediately check the latest capture.

There is also an SD card with built-in WiFi that supports the cloud. If you use this feature, your images will be saved in the cloud.

There are many different types of wireless SD cards on the market, but please understand that we cannot guarantee that all cards will work when used with our cameras.
In our company we are using Toshiba’s Flash Air.
We also tested the operation of the older Eye-Fi model and confirmed that there were no problems.

However, for some reason, Eye-Fi’s new model (cloud compatible) did not work properly with our camera.

※In case you have saved an image but suddenly cannot save it, there are two common reasons.

①Application cases, etc. of the WifiSD card you are using has been updated automatically. If the Wifi SD card is updated automatically, the Wifi settings may be disconnected. By resetting, the image will be recognized and saved

② In case the SD card reader cannot recognize it
Because the SD card reader has surprisingly unstable contact, when the SD card is a little off it is largely unrecognizable.

Our cameras can show whether the image storage media on the catalog is normal or abnormal.
If there is no camera symbol in the list of images below, if the camera symbol is not recognized, it will be recognized.

If it is not recognized, please take measures such as removing and inserting the SD card or replacing the card reader.

※These wireless SD cards are an introduction only and are not guaranteed to work with all models. So please check before use.

Additionally, if with the high performance XM200HD high resolution camera, you can check the captured images using the camera functions without transferring the MicroSD card to PC.

XM200HD high performance high definition camera

There is no length limit in the HDMI standard, but metal cables are typically up to 15m.
Most cables on the market have a length of up to 15m.

When looking, they are probably sold up to about 20m high.

However, there are different types of extenders on the market that can be used to extend lengths beyond 100m.

Below is an extender that uses coaxial cable and allows extension up to 120m.

There are several ways to import high-resolution camera signals into a computer.

One way is to use a capture board.

However, you will need a desktop computer and since you will have to open the computer and set up the board, you will also need minimal knowledge about computers and equipment selection.

Therefore, we will introduce converters that can be used regardless of the shape or type of computer.

HDMI→USB3.0 adapter

The image below is the HDMI⇒USB3.0 (GV-USB3/HD) adapter from IO Data Devices.

If your PC has a USB 3.0 port, you can use it with a laptop or desktop.

If you install the software from the included CD, you can easily capture still images and video and can also play it back immediately on your computer.

It has the advantage of avoiding the hassle of removing the USB memory or SD card from the camera and inserting it into a PC, but because it is connected via USB, real-time performance is slightly worse than when connected directly to screen .

Additionally, the PC needs a USB 3.0 port and it will not work with a USB 2.0 port.

Furthermore, the high resolution camera can be used with standard measurement software for microscopes.

Calibration is performed on two axes: XY.

Normally, calibration is performed using two axes, but to simplify calibration even a little, our high-resolution camera uses a method that allows you to click any three points on the ring. round.

Calibration will improve if you use the monitor as much as possible.
(Even though a small portion can be corrected, the error will be large. (Accumulated error))

Therefore, it is necessary to choose a circle as large as possible.

Not all circles need to be reflected.

It’s good if you can get any three points on the circle as big as possible.

Calibration can be performed in any of the following ways. However, the error increases when (A) > (B) > (C).

（A)	（B)	（C)

It is not necessary to see the entire circle.

For example: Can be calibrated by selecting three points as shown below.

Combined high-resolution camera (with measuring and drawing functions) GR200HD2-MePRO

The time you can record video with just a high-resolution camera is limited.

There are two main ways to record long videos lasting several hours: the “PC method” and the “non-PC method.”

If you use a PC, you can record video directly to your PC’s storage, allowing you to record over long periods of time.

If you are not using a PC, you can use our HDMI recorder by connecting an external hard drive.

HR-MINI HDMI recorder

By connecting a large capacity external hard drive (up to 1TB) instead of USB memory, you can record for long periods of time.

Note that USB external hard drives will not work

Be sure to use a self-powered external hard drive that requires its own power source.

Also, if the format is FAT32 then there is a limit of 4GB per file, so if you want to record a long video in one file, please use an NTFS formatted HDD.

※It does not work with exFAT.

If you want to view images from a monitor-type camera directly on one screen at the same time, you will need a device called a “split device”.

1. Connect two high-resolution cameras (single-function type)

This usage is usually simple and can accommodate 2 cameras

※Product code：YHD-M21

There are two conversion modes.

●Half-screen mode

●The image display mode from the first camera shows the full screen and displays the second camera in a smaller size.

This product is also available in our company.

Split-screen multi-viewer switch YHD-M21

2. Connect 4 high resolution cameras (high performance type)

Images from four high-resolution cameras can be displayed simultaneously on one screen.

※Product code: CDPS-41SQN

It can connect up to 4 cameras and has many different functions.

(Usage example) The top and side surfaces of an object can be inspected at the same time.

This product is also available in our company.

CDPS-41SQN HDMI screen splitter

3. Connect 9 HD cameras

This is a commercially available splitter that can connect 9 devices.

All operations are performed by remote control. Operations cannot be performed at maximum viewer content.

(Connection example) Connect two high-resolution cameras of different models

Functions include 9-screen display mode, 4-screen display mode and 1-screen display mode.

＜9-screen display mode＞

＜4-screen display mode＞

＜Single screen display mode＞

*When in single-screen display mode, each screen can be displayed in sequence.

4. For USB cameras

When performing split screen (multiple screen display) using a USB camera, no hardware is required; Our software, HiTriggerFPro4 and HiTriggerQ, can support multiple devices.

If you intend to use the microscope purchased from us abroad or resell it abroad, you will be required to submit a declaration of eligibility (spec sheet) based on the Export Trade Control Order to the relevant agencies.

At our company, we issue certificates based on customer requests related to microscopes (cameras, stereo microscopes, etc.)

Our microscopes, as they relate to the goods listed in paragraph 16 of the attached schedule 1 of the Export Control Order, are subject to the requirements of the comprehensive regulations listed in the same paragraph. Export may be required.
If you are planning to export, please contact Shodensha in advance to determine whether the product or technology complies with legal regulations.

Please contact us here.

For details on export, please contact the Ministry of Economy, Trade and Industry.

Ministry of Economy, Trade and Industry　Bureau of Economic and Trade Cooperation
Commercial management department
Department of Commercial Security Controls
TEL:03-3501-2800

A blood draw is a medical procedure.

There is a special microscope that allows you to examine blood flow without drawing blood.

It seems like many companies sell them, but I think the set below is the cheapest.

Here is the set of photos below.
A hard case to carry the monitor is also included.

	Fixed stand
How to observe blood flow
	Observe with the ring finger on the opposite side of your dominant arm. If you can’t see with your ring finger, use your middle finger.     First, apply the included oil to the thinnest part of the nail (nail base) with a cotton swab. (See photo on the left)
	It is not a special oil. It is also easily available on the internet.
	Insert your ring finger into the holder to determine approximate position.     Final fine-tuning is done using the focus adjustment dial on the microscope side.
		Actual observation photo
		Content of set ①Microscope ②Power distribution cable ③Video cable ④AC adapter ⑤Bracket ⑥Screen

Fluorescence visualization is a technique that uses fluorescent dyes and fluorescent proteins to highlight and image the area of interest.
When specific light (exciting light) is shined on the molecules of a substance, the light energy is absorbed and the electrons inside are excited.
Then, in the process of returning to the original ground state, a phenomenon called light-emitting fluorescence is applied.

Fluorescence results in very weak light emission.

Standard cameras are not sensitive enough to take pictures.

A special camera, usually a highly sensitive cooled CCD camera, is used.

Cooled CCD camera

Even when there is no light input, a signal called “dark current” is still generated inside the CCD, causing noise. This dark current increases as the element temperature increases, but it can be kept low by cooling it. The cooled CCD suppresses dark current by cooling the CCD, allowing highly sensitive imaging with less noise. Suitable for low light observation such as dark field observation and fluorescence observation.

CMOS camera has high sensitivity

Recently, the performance of CMOS cameras has been improved, and there are many cases where highly sensitive CMOS cameras are used for fluorescence observation.

You can also convert BMP to JPEG using the versatile application software in Windows.

Some free software allows converting multiple BMPs to JPEGs at once.
Below is free software that can convert all BMP to JPEG at once.

Even our company uses long-range microscopes.
（Please refer to the long range USB microscope LRA500CS-E/S.）

Here we will introduce the multi-dimensional long-range magnifier used for visual inspection.

When examining the inside of the machine through gaps, etc. you may want to zoom in and examine (observe) the object while maintaining a distance of 30cm to 60cm.
What is useful in such cases is something called Actual Scope or Gallery Scope.

Initially, it was used to zoom in and view exhibitions in art galleries and museums from a few meters away.

Some of these lenses have focal lengths from about 30cm to infinity.

If you combine this with our long range spot lighting system you can do the following.

	The photo on the left combines a Kenko “8×20” true scope with our LED-ZL3W long-range spot illumination.   When we confirmed in practice, it was about 10 times larger (visibility for φ2 cm) at 30 cm focal length and about 5 times larger (visibility for φ4 cm) at 60 cm focal length.
	It is also very convenient to have a focus adjustment dial on the lens side.
If the viewing area is narrower or there is a gap, you can also insert the ultra-fine fiber illumination device as shown below into the gap and observe from a distance with a long-range magnifier.

Choose a camera that can draw diagonal lines on the screen.
In our PC screen live camera and high resolution camera have diagonal display function.

Example of measuring the outer diameter of a gasket

1. Use light transmission to emphasize the edges.
2. Display diagonal lines on the screen.

3. Align the diagonal with the edge of the measuring point.
4. Reset the digital micrometer to zero.

5. Using the micrometer, move it to the leading face of the fringe.
6.At this time, the micrometer value becomes the outer diameter.

Advantages of this system

（1）No need for calibration before measurement.
  (2) Even objects not shown on the screen can be measured.
  (3) Since it depends on the accuracy of the micrometer, it is capable of indicating accuracy including a certificate of calibration.

Disadvantages of this system

（1）Time consuming for measurement
  (2) Can only measure horizontally and vertically.
    (It is also possible to measure obliquely if using a rotary table.)
  (3) Only the distance between two points can be measured.

    (Cannot measure angle, area, distance between center of circle, etc.)

XY table (with digital micrometer) TD100-25MX

■Direct observation of the epidermis

Even when you observe the hair at high magnification it is difficult to see the cuticle (The black foreign object simply becomes larger.)

Observe with ring light

If it’s a “high magnification type with coaxial illumination” it’s more or less easier to see.

Furthermore, the resolution of the lens must also be high.

(1) Universal high magnification microscope (coaxial illumination)

NSH130CS-R ultra-high magnification microscope, but low lens resolution (coaxial illumination)

Due to the low resolution of the lens, the outline of the epidermis is blurred and cannot be observed.

(2) High resolution/high magnification microscope (coaxial illumination)

Ultra high magnification and high resolution USB CCD microscope USH130CS-H1 Ultra high magnification microscope with high lens resolution (coaxial illumination)

(3) Metallurgical microscope

GR3400J Metallurgical Microscope Metallurgical microscope is a coaxial illumination microscope. Although not intended for use, you can clearly see the cuticles. If you just want to look at the cuticles, I think that’s the most cost-effective method.

To actually take pictures like the one below, you’ll need an electron microscope.*We don’t handle electron microscopes.

＜Comparative image of epidermal observation＞

■Metal microscope + 400x microscope camera

■Ultra high magnification microscope (USH3130CS-H1) 800x

■Indirect observation of the epidermis

The epidermis cannot be directly observed using a biological microscope.
However, it can be observed indirectly using a technique called the reservoir method

Prepare the “sewage liquid” and “sewage plate”.

Place the hair on the sump, apply the liquid in the tank and let it sit for a while.
The surface of the hair is transferred to the wastewater plate.

Observe this table using a biological microscope.

The following is an image of the epidermis observed at our company using the Sumpu method.

If the edge of the workpiece has a radius, it may not be visible clearly.

You can see clearly by adjusting magnification, lighting and background.

We tried observing the edge of the battery.
1. Difference in depth of focus (versus 80x magnification)
When opening the aperture	When the aperture is narrowed
As the aperture widens, the depth of focus becomes shallow and edges may not be clear.
2. Difference in background color (compared to 80x magnification)
In case the background color is black	In case the background color is white
Edges may become unclear due to background reflections, reflections from lights or shadows.
3. Difference in magnification
The depth of focus also changes with magnification. (Compare with open aperture)
At 30x	At 80x
Edges of the same object may appear blurred when magnification is increased.

Telecentric lens

Telecentric lenses allow you to obtain images with less distortion.

I tested with our RT3 and RT5 telephoto lenses.

We attached the RT3 and RT5 telecentric lenses to a USB camera to take photos of the glass ladder.

Take pictures with RT3 telephoto lens	Take pictures with RT5 telephoto lens
You can see that the 4 corners of the screen are not distorted at all. This is a feature of telecentric lenses.

CCTV lens

If you are using a CCTV lens, a telephoto lens will have less distortion than a wide-angle lens.

We tested with a 6mm prime lens and a 25mm prime lens.

	We attached an 8mm fixed focus lens to a USB camera and took a photo of the chart paper.
	It can be seen that the four corners of the chart paper are distorted.

	We attached a 25mm fixed focus lens to a USB camera and took a photo of the chart paper.
	There is not much distortion in the four corners of the graph paper.

Some macro lenses have less distortion depending on the performance of the lens, but they are more expensive.

Conclude

When the range is as wide as 1x to 1000x, a lens with a zoom ratio of 1:1000 is needed.

Currently, no matter how high-end the zoom lens is, there are only zoom lenses with a ratio of about 1:12 in the world.

The following three ways are considered to be the ways to achieve a wide range of them

① Prepare some lenses

Our standard variable magnification lens (SDS-M) has a zoom ratio of 1:6.5.

In other words, a range as wide as 1 to 1000 times is physically impossible.

However, the camera used in our microscope is a regular C-mount so changing lenses is easy.

Standard lens: SDS-M

Mounting: C mounting

Compatible cameras: 1/2, 1/2.5, 1/3 inch

Operating distance：90mm

Magnification: 20 to 120 times　※１

※１　Magnification when attached to our 1/2 inch camera and observed on the 17 inch screen

High magnification zoom lens: SDS-FZR

Mounting: C mounting

Compatible cameras: 1/2, 1/2.5, 1/3 inch

Operating distance：95mm

Magnification: 40x～ 240x　※2

※2　Magnification when attached to our 1/2 inch camera and observed on a 17 inch screen. However, if you change lenses, you will need to review the lighting.

In particular, when observing at extremely high magnification such as 1000x, bright enough light is required.

We also have lenses and lighting with over 1000x magnification as shown below.

NSH130CS-R ultra-high magnification USB microscope

Total magnification 200x to 1450x

② Choose a lens with an interchangeable objective lens system.

You can choose an interchangeable objective zoom lens from the moment you consider using it.

Initially, the standard objective lens of this microscope was 10x, giving a total magnification of 200 to 1450x.

The following optional objective lenses are available, so by removing this 10x objective lens and replacing it with the lower lens, you can achieve a wide range.

Optional 2x objective lens QM Plan Apo L2 (2X)

Magnification: 40x to 240x

Optional 5x objective lens QM Plan Apo HL (5X)

Magnification: 100x to 600x

③ Use with optional lens

Our standard lenses mentioned above are

Standard lens: SDS-M

Mounting: C mounting

Compatible cameras: 1/2, 1/2.5, 1/3 inch

Operating distance：90mm

Magnification: 20 to 120 times　※１

※１　Magnification when attached to our 1/2 inch camera and observed on the 17 inch screen

If you use this tip with the optional 0.5x lens below, the magnification will be 15x to 90x.

Secondary lens 0.5x TG-0.5

※Includes current advanced lenses.

In this case, the magnification will decrease and the focal length will go from 90mm to about 170mm.

If the pole is not high enough, we also have extension poles available.

If you use the optional 2x lens below, the magnification will be 60-360x。

Expansion set (x2) RCS-20

※Place it between the camera and your current lens.

In this case, the magnification will decrease but the focal length will remain at 90mm.

※However, this method is not highly recommended.

The secondary lens is just a lens on top of a lens, so many problems arise.

Reducing the magnification does not have much effect, but this increases the magnification, causing optical difficulties in the following points.

Need to increase the dimmer of the light

・If the magnification is high, the color separation and resolution of the lens will be significantly reduced.

Therefore, methods ① and ② are initially recommended.

For questions about lighting and lenses or to request demo equipment, please contact our technical support.

Adjust the microscope’s focus using the upper and lower dials.

The focus cannot be adjusted any other way.

However, as magnification increases, making fine adjustments becomes difficult.

In that case, use the fine-tuning adjustment type shown above.

Even after adjusting the focus, the following phenomenon may still occur.

■Blur surroundings

However, as magnification increases, making fine adjustments becomes difficult.

In that case, use the fine-tuning adjustment type shown above.

Even after adjusting the focus, the following phenomenon may still occur.

■Aberrations

As you increase magnification, edges become less clear and the entire image begins to look blurry.

Lowest magnification of our TG lens (X0.7)

Maximum magnification of our TG lens (X4.5)

Distance from the surface of the object to the end of the lens on the object side. A space where you can work. If light leaks out of the lens, W.D. will be narrower.

1．Overview of depth of focus/imaging depth of field

In a regular lens, only one point is completely in focus.

(Special lenses for precision measurements such as telecentric lenses are excluded)

There are areas that are less out of focus before and after the point that is perfectly in focus.

This is called depth of field.

If you move away from a point that is completely in focus, the point will gradually become blurred.

By narrowing the optical path, you can reduce the level of blur.

However, because the image becomes darker when stopped down, it cannot be used with very high magnification lenses.

2．Depth of focus/depth of field of the microscope

Pictured below is our full-aperture microscope, the MS200PC3 (20-110x).

Using a microscope with this aperture, we will compare the images when the lens is wide open and when the lens is closed.

(Reduce aperture to increase depth of field.)

Tilt the 0.5mm pitch glass scale at 45 degrees and observe it from above.

(1) Depth of focus/depth of field at 50x

＜When opening the aperture＞	＜When narrowed to maximum＞

How much focus there is depends on each individual

Since it is tilted at 45 degrees, multiplying by 1/1.41 gives the depth of stroke.

If you judge 4 steps (= 2 mm) to be correct then the depth of field is 2 mm x (1/1.41) = 1.42 mm.

Tilt the board at a 45 degree angle and observe it at 50x magnification.

(1.6 mm x 0.8 mm electronic components are spaced 1 mm apart.)

<When opening the aperture>	<When narrowed to maximum>

As reference, I also confirmed at 100x.
Because of the high magnification, the glass scale was changed to a distance of 0.2mm.

<When opening the aperture>	<When narrowed to maximum>

Please note that if you close the aperture, the lens will become darker and the resolution will decrease.

3．Depth of focus/technique to increase depth of field

◆Explanation: About the focal depth/depth of field of the lens

Before introducing this trick, I want to explain the lens’s depth of focus.

Depth of focus is also expressed in DOF (Depth of Focuse).

Case in air（N＝１）

DOF＝(0.55/(2×NA²))+(1/M×K/NA)

Formula explanation)

• The first item is “an item defined by resolution.”
• The second item “K” is “a constant determined by the resolution of the observer’s eye” and varies from person to person.
• “M” is the “overall magnification of the lens”.

What we can say from this is that the only way to increase depth of focus is to decrease magnification or decrease NA.

At the same magnification, the only option is to reduce NA.

The photos below are from the same manufacturer and product line, with the megapixel-compatible lens on the left and the lower-resolution all-purpose lens on the right.

When comparing lenses with the same magnification and focal length, general purpose lenses have a deeper depth of focus.

The only way to reduce NA with the same lens is to narrow the aperture.

If the lenses are different and the magnification is the same, the longer the focal length, the lower the NA, and the deeper the depth of focus.

◆Introduction to tips: “Aperture” and “Digital Zoom”

However, because both “aperture” and “digital zoom” tend to reduce resolution, we recommend using a 4K (8 million pixel) camera and a lens with equivalent high resolution. response.

I attached a 10 million pixel compatible 50mm lens to a 4K (8 million pixel) camera and attached a close-up ring for 50x macro photography for comparison.

Take a photo of the same board as above under the same conditions.

(1) AT 50X, ADJUST DEPTH OF FOCUS/DEPTH OF FIELD JUST BY CHANGING LENS APERTURE

<When opening the aperture>	<When narrowed to maximum>

(2) After adjusting the digital magnification to 50x, adjust the depth of focus/depth of field using the lens aperture.

<When opening the aperture>	<When narrowed to maximum>

(3) Benefits when using the procedure

Since it uses a fixed focus lens, zoom is not possible.

However, unlike macro zoom lenses, the working distance is not fixed, so there is flexibility in terms of W.D. longer, shrinking the system and nuances of depth of field.

Depending on lens selection, any (fixed) magnification can be set from 5x to 50x.

4．Conclude

The area in front and behind a point that is completely in focus and slightly out of focus is called depth of field.

How realistic it is depends on each individual.

By using a combination of “aperture” and  “digital zoom”, a deep depth of focus/depth of field can be achieved even with a simple microscope built with a lens fixed focal length.

Our Z500CS coaxial illumination USB microscope comes with a 1.5x auxiliary lens as standard.

This time, we tried to observe the metal parts of the USB memory.

Observe with 1.5x secondary lens (basic specifications)   Focal length, magnification and field of view are: ・Focal length: 52mm ・Visibility range(at 65x): 5.2mmx3.9mm ・Visibility range(at 390x): 0.8mmx0 .6mm

Seen like this at 65x   Seen like this at 390x

If you want to observe at low magnification, remove this 1.5x auxiliary lens to reduce magnification.

Remove the 1.5x secondary lens. Focal length, magnification and field of view at this time are: ・Focal length: 95mm ・Visibility range (at 45x): 8.0mmx6.0mm ・Visibility range(at 270x): 1.2mmx0.9mm

Seen like this at 45x   Seen like this at 270x

If you want to observe at even lower magnification, attach the 0.75x auxiliary lens to reduce the magnification.

Attach the 0.75x auxiliary lens At this point, the focal length, magnification, and field of view are: ・Focal length: 113mm ・Visibility range (at 35x): 11.3mmx8.5mm ・Visibility range (at 210x): 1.7mmx1.2mm

Seen like this at 35x   Seen like this at 210x

In this way, the minimum magnification of 35x (0.75x) cannot be used because the coaxial illumination becomes unbalanced.

Therefore, the lowest practical magnification is to remove the standard 1.5x auxiliary lens and observe at a minimum 45x magnification.

For details about the “coaxial illumination USB microscope” and “0.75x auxiliary lens” used this time, please see the product page below.

Z500CSLT coaxial illumination USB microscope

0.75x auxiliary lens (for FZ/SDS-FZR series microscopes) Z-0.75

Gamma is

 1. Color contrast can be adjusted.

2. Can reduce reflection and black discoloration.

Comparison at 1400x (X5) is near the highest magnification of the NSH lens

■Features of Lens

When using extremely high magnification lenses (over 1000x), the difference in lens performance becomes apparent near maximum magnification.

・Blurred edges (aberration)

・Color fading (chromatic aberration)

Depending on the subject, edge blur (aberration) and color blur (chromatic aberration) can have a significant effect on appearance.
→If this level is reduced to the maximum, the lens price will increase significantly.
→On the other hand, depending on the subject, costs can be significantly reduced.

■Examples have little impact

When examining samples on silicon wafers, the edges may be slightly blurred but are still fully visible. (Photo below)

Lens used: NSH Lens (multi-purpose lens)

Lens used: USH Lens (high resolution lens)

■Examples have many influences

Edge blurring and chromatic aberrations are also present. Although the presence or absence of foreign objects can be determined, detailed observations cannot be made.

Lens used: NSH Lens (multi-purpose lens)

Lens used: USH Lens (high resolution lens)

We have two simple propose that allow you to slide the object and easily bring the four corners into the field of view of the microscope.

■ Propose 1:

Here, we use a material that is softer and more slippery than aluminum.
(Example) Polyacetal (material used for oil-free gears, etc.), etc.

■Propose 2:

Use XY slide table

Attach the polarizing filter mounting unit manufactured by our company to the light emitting side.

The light input side uses his MIDOPT polarizing filter (attached inside the C-mount).

(It will be attached inside the camera as shown below.)

The filter on the light emitting side can be rotated, allowing polarized light observation.

There are various types of monoculars.
Some have removable eyepiece lenses, while others cannot.

■If the eyepiece lens cannot be removed
When the eyepiece diameter is φ30mm to φ32mm and made of hard material such as resin

You can attach a camera by connecting an adapter lens like the one below to the eyepiece part.

	Variable magnification camera adapter lens BA-A1835
	Camera adapter lens BA-A35

■When the eyepiece lens can be removed
When the inner diameter of the straight cylinder after removing the eyepiece is 23.2 mm (JIS standard)

You can connect a C-mount camera by removing the eyepiece and inserting a relay lens in its place as shown below.

■RECORDER

A device that can record images from before an event occurs is called a skipback recorder.

The images below can be saved before and after an external trigger signal is input.
You can also extract the images you need as still images.

■USB CAMERA + SOFTWARE

Also, if you can use a PC without using such equipment, you can record videos before and after the trigger occurs by using a USB camera or GigE camera and equipment monitoring drive recorder software.

We have a track record of manufacturing custom-made stands such as the ones below.

It is a manual type, but an electric type is also available.

It is large enough to fit A4 size paper.

You can observe every corner of the table.

You can create deep pockets by creating a structure like the one above.

Various types of glass scales are also available.

The photo below is of Shodensha’s glass scale.

Calibration glass scale GS-4SQ

When calibrating our microscope, the grid type is easier to adjust than the cross display. Furthermore, it would be convenient to have several square sizes to suit various magnifications.

The glass scale mentioned above is perfect for this purpose.